Home / 27,439.76-37,865-15,503.60

Finding the Fourth Proportional to 27,439.76, 37,865 and 15,503.60

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Solution

The fourth proportional to 27,439.76, 37,865 and 15,503.60 is: 21,393.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,439.76 : 37,865 = 15,503.60 : x
  2. Step 2: Convert to fraction form
    27,439.76/37,865 = 15,503.60/x
  3. Step 3: Cross multiply
    27,439.76x = 37,865 × 15,503.60
  4. Step 4: Simplify right side
    27,439.76x = 587,043,814
  5. Step 5: Solve for x
    x = 587,043,814/27,439.76
  6. Step 6: Final answer
    x = 21,393.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.